// Copyright 2024 Dolthub, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package tree

var _ Statement = &AlterTrigger{}

// AlterTrigger represents a ALTER TRIGGER statement.
type AlterTrigger struct {
	Name      Name
	OnTable   TableName
	NewName   Name
	No        bool
	Extension string
}

func (node *AlterTrigger) Format(ctx *FmtCtx) {
	ctx.WriteString("ALTER TRIGGER ")
	ctx.FormatNode(&node.Name)
	ctx.WriteString(" ON ")
	ctx.FormatNode(&node.OnTable)
	if node.NewName != "" {
		ctx.WriteString(" RENAME TO ")
		ctx.FormatNode(&node.NewName)
	} else {
		if node.No {
			ctx.WriteString(" NO")
		}
		ctx.WriteString(" DEPENDS ON EXTENSION ")
		ctx.WriteString(node.Extension)
	}
}
